import axios from 'axios';
import { Notification, MessageBox, Message, Loading } from 'element-ui';
import errorCode from '@/utils/errorCode';
import { tansParams, blobValidate } from '@/utils/comm.js';
import cache from '@/utils/cache';
import util from '@/libs/util.js';
import store from '@/store';

// 是否显示重新登录
export const isRelogin = { show: false };

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8';
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: process.env.VUE_APP_BASE_API,
  // 超时
  timeout: 10000
});

// request拦截器
service.interceptors.request.use(
  (config) => {
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
    // 让每个请求携带自定义token
    config.headers.Authorization = 'Bearer ' + util.cookies.get('token');
    // get请求映射params参数
    if (config.method === 'get' && config.params) {
      let url = config.url + '?' + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }
    if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
      const requestObj = {
        url: config.url,
        data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
        time: new Date().getTime()
      };
      const sessionObj = cache.session.getJSON('sessionObj');
      if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
        cache.session.setJSON('sessionObj', requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交

        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          const message = '数据正在处理，请勿重复提交';
          console.warn(`[${s_url}]: ` + message);
          return Promise.reject(new Error(message));
        } else {
          cache.session.setJSON('sessionObj', requestObj);
        }
      }
    }
    return config;
  },
  (error) => {
    console.log(error);
    Promise.reject(error);
  }
);

window.$count = 0;

// 响应拦截器
service.interceptors.response.use(
  (res) => {
    // 未设置状态码则默认成功状态
    const code = res.data.code || 200;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode.default;
    // 二进制数据则直接返回
    if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
      return res.data;
    }
    if (code === 401) {
      store.dispatch('store/account/logout');
      Message({
        message: msg,
        type: 'error'
      });
      return Promise.reject(new Error(msg));
    } else if (code === 500) {
      Message({
        message: msg,
        type: 'error'
      });
      return Promise.reject(new Error(msg));
    } else if (code !== 200) {
      Notification.error({
        title: msg
      });
      return Promise.reject('error');
    } else {
      return res.data;
    }
  },
  (error) => {
    console.log('err--->' + error);
    let { message } = error;
    if (message === 'Network Error') {
      message = '后端接口连接异常';
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时';
    } else if (message.includes('Request failed with status code')) {
      message = '登录超时，请重新登录';
    }

    if (window.$count === 0) {
      Message({
        message: message,
        type: 'error',
        duration: 5 * 1000
      });
    }
    if (message.includes('401')) {
      window.$count++;
      store.dispatch('store/account/logout');
    }
    return Promise.reject(error);
  }
);

export default service;
